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OpenAI Rates GPT-6 Cyber Critical After Major Vulnerability Discoveries
Security Affairs · By Pierluigi Paganini ·

The Brief
- OpenAI launched GPT-6 Cyber, a version of GPT-6 Astra built to find software vulnerabilities, test how attackers could exploit them, and help develop fixes.
- OpenAI says the model found 81 previously unknown vulnerabilities in Firefox, and Security Affairs reports they were high-severity, plus hundreds of Linux bugs.
- OpenAI says GPT-6 Cyber beats GPT-5.6 Cyber at exploitation and goes out of scope less often, and it is designed for authorized security testing of websites and applications.
Why it matters
Security teams and maintainers may get a tool that finds and exploits bugs faster, so the same capability could also be used by attackers. Developers should expect more AI-found vulnerability reports in widely used software.
Who’s affected
- Firefox maintainers and users
- Linux kernel and software maintainers
- Security teams doing authorized testing of websites and applications
- #openai
- #gpt-6
- #ai-security
- #vulnerability-research
- #firefox
OpenAI GPT-6 Cyber found 81 high-severity Firefox flaws and hundreds of Linux bugs, raising new questions about AI-powered cyber risks. OpenAI has introduced GPT-6 Cyber, a model built for security research that it says finds and fixes vulnerabilities better and stays within the…